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活性污泥SBR系统对四环素耐药菌和总四环素的去除特性

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肖斌, 黄满红, 陈亮. 活性污泥SBR系统对四环素耐药菌和总四环素的去除特性[J]. 环境化学, 2012, 31(12): 1974-1978.
引用本文: 肖斌, 黄满红, 陈亮. 活性污泥SBR系统对四环素耐药菌和总四环素的去除特性[J]. 环境化学, 2012, 31(12): 1974-1978.
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XIAO Bin, HUANG Manhong, CHEN Liang. Study of removal characteristic on tetracycline and tetracycline resistant bacteria in SBR[J]. Environmental Chemistry, 2012, 31(12): 1974-1978.
Citation: XIAO Bin, HUANG Manhong, CHEN Liang. Study of removal characteristic on tetracycline and tetracycline resistant bacteria in SBR[J]. Environmental Chemistry, 2012, 31(12): 1974-1978.
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活性污泥SBR系统对四环素耐药菌和总四环素的去除特性

  • 1.

    东华大学环境科学与工程学院, 上海, 201620

  • 基金项目:

    国家自然科学基金(21007010)

    教育部博士点基金项目(20090075120007)

    上海科委项目(09230500200)

    中央高校基本科研基金

    湖南省交通厅科研项目(200908)

    交通运输部科技项目(2010353343290) 资助.

Study of removal characteristic on tetracycline and tetracycline resistant bacteria in SBR

  • 1.

    College of Environmental Science & Engineering,Dong Hua University,Shanghai, 201620, China

  • Fund Project:

  • 摘要: 通过模拟运行SBR工艺,比较不同四环素进水浓度、运行周期以及氧环境条件对四环素耐药菌及痕量四环素的去除特性.结果表明,痕量四环素的存在会对活性污泥中微生物耐药性产生影响,SBR进水四环素浓度为250 μg·L-1时活性污泥中的微生物会逐步变成耐药微生物,而进水中不含四环素时,耐药的微生物会逐步变成非耐药微生物.总四环素的去除效果在好氧条件下周期为12 h时最好,达到90%以上.好氧条件下周期为8 h时每克污泥增加的四环素耐药菌数最多,约为2.89×109 CFU·g-1;好氧条件下周期为20 h时为最少,约为1.0×108 CFU·g-1,有利于缓解四环素耐药菌的产生.
    Abstract: In this work, the removal characteristics of tetracycline and tetracycline resistant bacteria through operating SBR were compared with different concentrations of tetracycline, operation cycles and oxygen environmental conditions. The results show that the existence of trace tetracycline has great impact on the resistance of microorganisms in activated sludge. Some microorganisms in the actived sludge turned gradually into resistant microorganisms when the concentration of influent tetracycline was 250 μg·L-1. When the influent did not contain tetracycline, the resistant microorganisms gradually became non-resistant. Total tetracycline removal rate in aerobic condition and 12 h cycle is the highest, up to 90%. In aerobic condition and 8 h cycle, the increase of tetracycline resistant bacteria number per gram sludge was the largest, about 2.89×109 CFU·g-1. In aerobic condition and 20 h cycle, it was about 1.0×108 CFU·g-1,and was the lowest. This is the beneficial in inhibiting the production of tetracycline resistant bacteria.
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    [3] 周启星,罗义,王美娥. 抗生素的环境残留、生态毒性及抗性基因污染[J]. 生态毒理学报, 2007,2(3): 243-251
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  • 收稿日期:  2012-02-09

活性污泥SBR系统对四环素耐药菌和总四环素的去除特性

  • 1. 东华大学环境科学与工程学院, 上海, 201620
  • 收稿日期:  2012-02-09
基金项目:

国家自然科学基金(21007010)

教育部博士点基金项目(20090075120007)

上海科委项目(09230500200)

中央高校基本科研基金

湖南省交通厅科研项目(200908)

交通运输部科技项目(2010353343290) 资助.

摘要: 通过模拟运行SBR工艺,比较不同四环素进水浓度、运行周期以及氧环境条件对四环素耐药菌及痕量四环素的去除特性.结果表明,痕量四环素的存在会对活性污泥中微生物耐药性产生影响,SBR进水四环素浓度为250 μg·L-1时活性污泥中的微生物会逐步变成耐药微生物,而进水中不含四环素时,耐药的微生物会逐步变成非耐药微生物.总四环素的去除效果在好氧条件下周期为12 h时最好,达到90%以上.好氧条件下周期为8 h时每克污泥增加的四环素耐药菌数最多,约为2.89×109 CFU·g-1;好氧条件下周期为20 h时为最少,约为1.0×108 CFU·g-1,有利于缓解四环素耐药菌的产生.

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